Bbush fob cabpet-sweepebs



G R MERHIMAN BRUSH FOR CARPET SWEEPERS.

APPLICATION FILED OCT. 27,1919. 1,350,664` Patented Aug. 24, 1920.

Grof/e- UNITED STAIS GROVE R. MERRIMAN, or AKRON, OHIO, AssreNoR ro JOHN n. VANDER PUTTEN, or AKRON, OHIO.

PATENT ortica.

BRUSH FOR oARrnr-swnnrnns.

Application led October 27, 1919.

lTo all whom t may 00am/rn Be it known that l, finora R. MERBIMAN, a citizen of the United States, residing` at Akron, in the county of Summit and State of Ohio, have invented a new and useful Brush for Carpet-Sweepers, of which the following` is a specification. l i

This invention rela-testo improvements in devices for brushing vand cleaning floors and floor covering, such as carpets, rugs and the like and more especially to a brushcarried in said device. 7 1

The objects of the hinder the free and easy movementE of the device over the surface to be cleaned, to

' within the scope of the appended claims,

without departing from the spirit or sacrilicing any of the advantages of the invention.

The invention thusA set forth .in general terms is illustrated in the accompanying drawings forming parts hereof, in which- Figure l is a perspective view of the lower portion of the sweeper casing showing the brush assembled therein.

Fig. 2 is a plan view of al portion of the sa ne, parts being shown in section for the purpose of illustration.

A practical embodiment 'of the invention is disclosed in the accompanying drawings, forming a part of this specification in which similar numerals of reference indicate corresponding parts throughout the several views.

The numeral l indicates the lower portion of a sweeper casing which may be of any well known design and as shown in the drawings is provided with the compartments Specification of Letters Patent.

invention are to provide a brush so constructed that'it will operate with the least resistance and will-not` Patented nuoai, 1920.

Serial No. 333,530.

drive wheels 3 which are pivoted within said compartments in the usual manner. It should be understood that the type of sweeper casing shown in the drawings forms no particular part of the present invention, the brush embodying the invention being adaptable to any usual and well known form of portable sweeper.

Bearings i are mounted upon the casing as shown, the shafts 5 being journaled in said hearings. Small pulley 6 is mounted upon each shaft and connected to the adjacent drive wheel 3 by means of a belt 7.

Each ofthe shafts 5 is provided with a flattened inner extremity. 8' adapted toV be received in theV similarly shaped end 9 of the tubular brush shaft l0. The brushes ll are formed upon the brush-.shafts l0 in any usual and well known manner.

The inner extremities of each of the brush shafts l() are extended into the tubular cou-- pling member 12 being slidably mounted through apertures in the end caps 13 which are provided upon said coupling member. A pair of spaced washers 14- and l5 are fixedly attached to Aeach of the brush shafts, those washers being slidable within the tubular coupling member and arranged to fit snugly therein, allowing the brush shafts to move axially toward and fre-m each other within the tubular cup member and preventing any side member of the brush shafts within the couplingmember.

A ball 16 engages thel inner open end of each of the brush shafts and fits freely within the interior of the tubular coupling member, spring 17 engaging both of said balls and normally holding the brush shafts in the positions best illustrated in Fig. 2, the washers 11ithereon being held in cngagement with the caps 13 of the coupling member. In order to remove the brush from the sweeper or replace the same therein, it is only necessary to grasp the brushes and .move them axially toward each other, cempressing the springs 17 suiiiciently to allow the outer ends of the brush shafts to clear the ends of the axles 5. Upon releasing the grip upon the brushes the spring will. immediately force them back into the position shown in F 2, the washers lll limiting the outward movement of the brush shafts.

ln operation it will be seen that the brushes are rotatable independently of each other and thus the sweeper may be turned in any direction without interfering with the action of the brushes as each brush is driven independently by the adjacent drive wheel. It will thus be seen that the sweeper may be moved or turned at times so that only one brush will be rotated or that each brush may be rotated in an opposite direction from the other and the driving wheels will never be locked when the sweeper is turned as Otten happens in the usual type ot sweepers, in which a single brush is driven by both drive wheels.

ilthough the drawings and above speeitii cation disclose the best mode in which l have contemplated embodying my invention l desire to be not limited to the details of such disclosure, for, inthe further practical application of my invention, many changes inf form and Construction may be made, as circumstances require or experience suggests, without departing` from the spirit of the invention, within the scope ot the appended claims.

l claim l. ln a carpet sweeper, a pair 'of axially alined independently rotatable brushes and a coupling member connecting the inner extremities of said brushes, said brushes arranged for axial movement with relation to each other.

2. ln a carpet sweeper, a pair ot axially alined independently rotatable brushes, and a tubular `coupling` member rotatably and axially movable upon the inner extremities i of said brushes.

'3. In a carpet sweeper, a pair of axially alined independently rotatable brushes, a tubular coupling member rotatably and axially movable upon the inner extremities of said brushes, and a resilient member within said coupling engaging the inner extremities oi the brushes. Y

4l. In a carpet sweeper, a pair ot axially alined rotatable brushes, a tubular coupling member within which the inner ends of said brushes are slidably and rotatablyV mounted, balls engaging the inner ends of said brushes and a spring located between saizl balls.

In a carpet sweeper, a pair of axially alined rotatable brushes, a tubular coupling member provided with Vend caps through which the inner ends of said brushes are slidably and rotatably mounted, and a spring located between said brushes..

. 6. ln a carpet sweeper, a pair ot axially alined rotatable brushes, a tubular CouplingA member provided with end caps through which the inner ends or the brushes are rotatably and slidably mounted, balls engaging the inner ends of said brushes and a spring located between said balls.

`7. 4ln a carpet sweeper, a pair of axially alined rotatable brushes, a tubular coupling` member provided with end caps through which the inner ends of the brushes are rotatably and slidably mounted, balls engaging the inn-er ends of said brushes, a spring located'between said balls and independent means for rota-ting each brush.

ln testimony that l claim the above have hereunto subscribed my name.

GROVE R. MERRIMAN. 

